HuagongsheHuagongshe Chemistry Print Report · For research reference only
Dropropizine → Levodropropizine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Dropropizine | HCID 3169 | — |
| Reactant | L-Tartaric acid | HCID 444305 | — |
| Product | Levodropropizine | HCID 65859 | — |
Reaction Steps
According to the invention, resolution of dropropizine is carried out by treating it with L(+)tartaric acid in aqueous medium: the precipitated salt is then crystallized, alkalinized and recrystallized to give levodropropizine.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05087698 |
| Source dataset | uspto-grants-1992_02 |
| ORD ID | ord-7838876847e44a8183215a35cd061918 |
| Source note | uspto-grants-1992_02 |